[ For some reason I cant reply to in the following thread: http://community.norton.com/t5/Other-Norton-Products/pcanywhere-and-Windows-7/m-p/174003/ ]
As stated by Dave-mc (last post), the client is not updated after connection. I recall seeing this issue in the past under Vista w/ version 12.1. My workaround has been to switch focus from the current dialog or window and then back. IOW, briefly click on another area of the screen, outside of the window you're viewing. This immediately updates the screen once you click back. Its a pain having to do this after every action taken, but it works.
In the end, another (temporary) solution may be less frustrating.